100340020 has 24 divisors (see below), whose sum is σ = 229870368. Its totient is φ = 36487200.

The previous prime is 100340017. The next prime is 100340063. The reversal of 100340020 is 20043001.

It is a super-2 number, since 2×100340020² = 20136239227200800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 100339979 and 100340006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227826 + ... + 228265.

It is an arithmetic number, because the mean of its divisors is an integer number (9577932).

Almost surely, 2^100340020 is an apocalyptic number.

100340020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100340020 is an abundant number, since it is smaller than the sum of its proper divisors (129530348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100340020 is a wasteful number, since it uses less digits than its factorization.

100340020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456111 (or 456109 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 100340020 is about 10016.9865728172. The cubic root of 100340020 is about 464.6843659070.

Adding to 100340020 its reverse (20043001), we get a palindrome (120383021).

The spelling of 100340020 in words is "one hundred million, three hundred forty thousand, twenty".